Isaiah tillson



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Letters Patent No. 73,058, dated January 7, 1868. I

IMPROVED RAILWAY-QHAIR.

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TO ALL PERSONS TO WHOM THESE PRESENTS MAY COME:

Be it known that I,,ISAIAII TILLSON, of South Abington, in the county of Plymouth, and State of Massachusetts, have invented a new and useful Improvement in Railway-Chairs; and do hereby declare the same to be fully described in' the following specification, and represented in the accompanying drawings, of which- Figure 1 is a top View of one of my improved chairs as applied to two rails of a railroad.

Figure 2 is an endview of the same. i p

Figure 3 is a longitudinal section, taken through the chair, and on a plane at right angles to the two rails.

In such drawings, and B are the two rails, and C the chair, the said rails being .supportedin the chair by mean'sof two jaws, D D, arranged on opposite sides of the two rails, and in thebottoms of their flanks, in manner as represented in the drawings. The ch'air is formed with a recess a, at its middle, to receive the rails and the jaws." It also has two chambers, b 6, leading in opposite directions from such recess, and at right angles therewith, each of such chambers being provided with a cap or cover-plate, a, which slides into dove-tail grooves, d d, made in the opposite walls of the chamber, or may be otherwise properly connected with the chair.

Fromeach jaw there extends into the adjacentchamber Z) a shank or arm, e, which abuts against the outer end of the chamber, or a wedge or block of metal,f, arranged against such end. The two arms of the jaws stand at slight inclinations with the horizon or plane of the bottom of the chair, in manner as shown in fig. 3 of the drawings, in order that when a wheel may be running over either or both the rails, its weight, by pressing the rails down upon the jaws, will cause such jaws to move toward each-other, so as to firmly grasp the two rails between and by them, the rails bringing up against the bottom of the recess of'the chair. In order to obtain the proper amount of pressure or grasp of the jaws in the rails, wedges or blocks of proper widths may be arranged in the jaw-arm chambers, and for the ends of the jawarms to abut against. By the jaws and-their arms, arranged in and 'acting with the chair, and its recess and wedge-chambers Z1 6, in manner as described, the two rails may be firmly held in their proper relation with each other at their junctions by the weight of a carriage, before, while, and after such carriage may be crossing the joint between such rails;

I therefore claim the arrangement and combination of the jaw-arms and their chambers in the chair, with the jaws and the rails arranged within the chair, as set forth.

I also claim the combination of the covering-plates, with the jaws, their arms, and the chambers for receiving such arms, as set forth, such covering-plates serving to prevent the jaws and their arms from being thrown out of the chair by,vertical movements or vibrations of the-rails.

, I also claim, in combination with the chair, movable jaws, to act against or grasp opposite sides of the rail or rails, andbe pressed against such by a weight or wheel while resting on or passing along on such rail, or rails, or either of them, as set forth.

ISAIAH TIIILSON.

Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

